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For example, instead of circular holes on a 2-Dimensional plane, the entry and exit points could be visualized as spherical holes in 3D space leading into a four-dimensional "tube" similar to a spherinder. [citation needed] Another way to imagine wormholes is to take a sheet of paper and draw two somewhat distant points on one side of the paper.
A wormhole is also used in this universe to put a probe into the sun (the wormhole is utilized to cool the probe, throwing out solar material fast enough to keep the probe at operating temperatures). In his book Ring, the Xeelee construct a gigantic wormhole into a different universe which they use to escape the onslaught of the Photino birds.
The wormhole metric has the proper-time form =, where = + = + (+) = + (+) [+ ()] and is the drainhole parameter that survives after the parameter of the Ellis drainhole solution is set to 0 to stop the ether flow and thereby eliminate gravity.
The Ellis drainhole is the earliest-known complete mathematical model of a traversable wormhole.It is a static, spherically symmetric solution of the Einstein vacuum field equations augmented by inclusion of a scalar field minimally coupled to the geometry of space-time with coupling polarity opposite to the orthodox polarity (negative instead of positive):
Vandenbergh effect (biology) Vaporific effect (fire) Veblen effect (consumer theory) (goods) Venturi effect (fluid dynamics) Venus effect (artistic techniques) (cognitive science) (film techniques) (mirrors) (psychology) Visual effects (computer generated imagery) Visual effects art director; Voigt effect (magnetism) (optics)
A fundamental question in developmental biology is how an organ knows to stop growing after reaching a particular size. Organ growth relies on several processes occurring at the cellular level, including cell division and programmed cell death (or apoptosis). The Hippo signaling pathway is involved in restraining cell proliferation and ...
Adenosine may have opposite effects on bone metabolism, because while certain purinergic receptors stimulate adenylyl cyclase activity, others have the opposite effect. [ 58 ] [ 59 ] Under certain circumstances adenosine stimulates bone destruction and in other situations it promotes bone formation, depending on the purinergic receptor that is ...
Crossword construction in modern times usually involves the use of software. Constructors choose a theme (except for themeless puzzles), place the theme answers in a grid which is usually symmetric, fill in the rest of the grid, and then write clues. A person who constructs or solves crosswords is called a "cruciverbalist". [1]